Fix display of theme checkboxes

src/components/font_control/font_control.vue

@@ -4,6 +4,7 @@
     :class="{ custom: isCustom }"
   >
     <label
+      :id="name + '-label'"
       :for="preset === 'custom' ? name : name + '-font-switcher'"
       class="label"
     >
@@ -12,7 +13,8 @@
     <input
       v-if="typeof fallback !== 'undefined'"
       :id="name + '-o'"
-      class="opt exlcude-disabled"
+      :aria-labelledby="name + '-label'"
+      class="opt exlcude-disabled visible-for-screenreader-only"
       type="checkbox"
       :checked="present"
       @change="$emit('update:modelValue', typeof modelValue === 'undefined' ? fallback : undefined)"
@@ -21,6 +23,7 @@
       v-if="typeof fallback !== 'undefined'"
       class="opt-l"
       :for="name + '-o'"
+      :aria-hidden="true"
     />
     {{ ' ' }}
     <Select

src/components/range_input/range_input.vue

@@ -4,6 +4,7 @@
     :class="{ disabled: !present || disabled }"
   >
     <label
+      :id="name + '-label'"
       :for="name"
       class="label"
     >
@@ -12,7 +13,8 @@
     <input
       v-if="typeof fallback !== 'undefined'"
       :id="name + '-o'"
-      class="opt"
+      :aria-labelledby="name + '-label'"
+      class="opt visible-for-screenreader-only"
       type="checkbox"
       :checked="present"
       @change="$emit('update:modelValue', !present ? fallback : undefined)"
@@ -21,6 +23,7 @@
       v-if="typeof fallback !== 'undefined'"
       class="opt-l"
       :for="name + '-o'"
+      :aria-hidden="true"
     />
     <input
       :id="name"
@@ -34,9 +37,10 @@
       @input="$emit('update:modelValue', $event.target.value)"
     >
     <input
-      :id="name"
+      :id="name + '-numeric'"
       class="input-number"
       type="number"
+      :aria-labelledby="name + '-label'"
       :value="modelValue || fallback"
       :disabled="!present || disabled"
       :max="hardMax"

src/components/shadow_control/shadow_control.vue

@@ -129,12 +129,13 @@
           v-model="selected.inset"
           :disabled="!present"
           name="inset"
-          class="input-inset"
+          class="input-inset visible-for-screenreader-only"
           type="checkbox"
         >
         <label
           class="checkbox-label"
           for="inset"
+          :aria-hidden="true"
         />
       </div>
       <div